<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="{{ url_for('result') }}" method="post">
        <p>姓名：<input type="text" name="姓名" id=""></p>
        <p>性别：<input type="text" name="性别" id=""></p>
        <p>年龄：<input type="text" name="年龄" id=""></p>
        <p><input type="submit" value="提交"></p>
    </form>
</body>
</html>